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From: jinho hwang <hwang.jinho@gmail.com>
Date: Fri, 12 Jul 2013 11:46:55 -0400
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To: dev <dev@dpdk.org>
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Subject: [dpdk-dev]  1 core / 1 port receiving performance discrepancy
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Hi Guys,

I am currently testing my code with two machines(X5650 @ 2.67GHz,
82599EB): one runs my code, and the other runs Pktgen. The first task
is to see how my code performs comparing to test-pmd. Both use only
one port with one core to receive packets. test-pmd uses rxonly mode.
My code only receives packets and discards them right away, and there
are no other processing at all. Different from what I expected,
test-pmd shows 33M packets (do not count on the second --- just total
number of packets sent from Pktgen), whereas mine shows 18M packets
with the same traffic.

I have tried to configure many things such as increasing rx queue
size, increasing max packet receive buffer, but the number did not
make differences.

Can I get some help?

Thank you,

Jinho